html,body{
  height: 100%;
  overflow: hidden;
}
body{
  margin: 0;
}
h1,h2,h3,h4,h5,h6,p,ul,ol{
margin: 0;
padding: 0;
list-style: none;
}

a{
  text-decoration: none;
}
#app{
  height: 100%;
  overflow: hidden;
}
